NP NER PMS BMS FY25(2)_Bridge_Insp_Rpts_adv.pdf

BRIDGE INSPECTION REPORT

TURNTABLE BRIDGE

TURNTABLE BRIDGE OVER TURNTABLE PIT

STEAMTOWN NATIONAL HISTORIC SITE

LOOKING TOWARD B

STRUCTURE NO. 4810-033P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 11/18/2025

RIGHT SIDE

Report prepared by:

Federal Highway Administration FLH Office of Bridges and Structures Bridge Inspection Program 22001 Loudoun County Parkway, Building E2, Suite 200 Ashburn, VA 20147 https://bridge.flhd.fhwa.dot.gov https://bridge.flhd.fhwa.dot.gov

STRUCTURE SUMMARY STRUCTURE NO. 4810-033P

INSPECTION DATE. 11/18/2025TURNTABLE BRIDGE

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: 3 - STEEL NO. OF MAIN SPANS: 002

MAIN SPAN TYPE: 03 - GIRDER AND FLOORBEAM NO. OF APPR. SPANS: 0

SYSTEM

# OF BEAMS, MAIN SPAN: 2 STRUCT. TOTAL LENGTH: 90.5 FT ( 27.6 M)

DECK TYPE: 9 - OTHER MAX. SPAN LENGTH: 42 FT ( 12.8 M)

WEARING SURFACE: 9 - OTHER DECK WIDTH: 10.0 FT ( 3 M)

ABUT. FOUNDATIONS: 2 - SPREAD FTG ON BEARING MAT'L CURB TO CURB WIDTH: 10.0 FT ( 3 M)

PIER FOUNDATION(S): 2 - SPREAD FTG ON BEARING MAT'L YEAR BUILT: 1990

ABUTMENT / PIER MAT'L: 1 - CONCRETE YEAR RECONSTRUCTED:

PROJ./PLAN REF. NO: / SKEW ANGLE: 0 °

NPS ROAD CLASS: 1 - PRINCIPAL PARK ROAD FRACTURE CRITICAL: Y

STRUCTURE HISTORY:

LOCATION

STEAMTOWN NATIONAL HISTORIC SITE MILE POINT: (KM PT 0 )

STATE: 423 - PENNSYLVANIA LOCATION: Center of Roundhouse

FACILITY CARRIED: TURNTABLE BRIDGE

FEATURE INTERSECTED: TURNTABLE PIT

INSPECTION TEAM: Parviz Sharifi

TEAM LEADER

Parviz Sharifi

REPORT REVIEWER

Marcus Miller

REPORT APPROVER 02/17/2026

Jorgomai Ceesay

STRUCTURE EVALUATION SUMMARY

This steel girder railroad turntable is in good condition overall. The only problems requiring attention at this time include accumulation of debris on the bottom flanges at the wheel bearing areas, debris inside the center pivot, and spot rusting of the steel girders, mainly at the bearing areas and diaphragms. In addition, the retaining wall exhibits some signs of deterioration, including staining and cracking with efflorescence at several locations. This condition will continue to be monitored during future inspection cycles.

Repairs should be made as outlined in this report to prevent the possible development of more serious or costly problems in the future.

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 4810-033P

TURNTABLE BRIDGE INSPECTION DATE : 11/18/2025

PRIORITY OF IMPROVEMENT226

A (Critical) - Structure is closed, in immediate damage of collapse, or presents a critical safety danger.

B (Major) - Structure is seriously deficient or presents a safety hazard, but can remain open at reduced loads or with frequent inspections.

C (Moderate) - Structure is deficient, functionally obsolete, or requires substantial repairs to prevent a serious deficiency or unsafe condition.

D (Minor) - Structure is generally in good condition. Preventive maintenance may be required.

E (Special) - Structure is under construction or reconstruction.

D

Item No.

Maintenance Recommendations

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

59.2,60.1

3 CLEAN DEBRIS FROM BOTTOM FLANGE OF GIRDERS AT

BEARING AREAS AND FROM INSIDE CENTER PIVOT. 1 LS

PRELIM. MAINTENANCE TOTAL :

Item No.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST ESTIMATES

REHAB RECONSTR

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL :

PRELIM. REHABILITATION TOTAL :

PRELIM. RECONSTRUCTION TOTAL : ..

TOTAL ITEMIZED COSTS:

PRELIMINARY ESTIMATE TOTAL * :

(*Includes typical contract costs for mobilization, traffic control and design/construction engineering: but does not include detour bridges, work beyond the bridge limits, or work not listed above. Estimates are approximate and are for planning purposes only; they should not be used as a complete or final engineers estimate.)

Remarks : Cost estimates are based on historical data, including costs for similar projects when available.

FIELD INSPECTION REPORT STRUCTURE NO. 4810-033P

TURNTABLE BRIDGE INSPECTION DATE: 11/18/2025

58. DECK

1. DECK SLAB

4. RIDEABILITY

5. CURBS, SIDEWALKS, AND MEDIAN

6. PARAPETS AND/OR RAILINGS

7. DRAINS AND DRAINAGE

8. UTILITIES

9. DEFLECTION AND/OR VIBRATION

10.OTHER:

59. SUPERSTRUCTURE

1. BEARING DEVICES

2. GIRDERS OR BEAMS

3. ARCH(ES) OR SLAB(S)

4. FLOOR BEAMS AND STRINGERS

5. TRUSSES

6. DIAPHRAGMS AND BRACING

7. PAINT

8. FASCIA(E)

9. DEFLECTION AND/OR VIBRATION

10.ALIGNMENT

11.OTHER

60. SUBSTRUCTURE

61. CHANNEL

1. ALIGNMENT

2. EROSION AND/OR SCOUR

3. CHANNEL PROTECTION

4. WATERWAY OBSTRUCTIONS

5. OTHER

6. ADEQUACY OF OPENING

7. NORMAL VELOCITY

8. AVERAGE CLEAR OPENING

9. STREAMBED COMPOSITION:

222. APPROACHES

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER

223. RETAINING WALL

1. WALL

2. WEEP HOLES

3. FOUNDATION

4. EROSION AND/OR SCOUR

5. SETTLEMENT OR DEFLECTION

6. OTHER

N

G

G

G

G

G

G

G

G

N

N

N

G

G

N

G

G

N

N

N

N

N

G

N

G

G

N

F

N

N

N

G

G

N

2. EXPANSION JOINTS N

3. WEARING SURFACE G

G FT

CONDITION RATING CODE EQUIVALENTS FOR SUB-ELEMENTS

G = GOOD (CODES 7 - 9) F = FAIR (CODES 5 - 6) P = POOR (CODES 0 - 4)

CONDITION RATING CODES FOR ITEMS 58 - 62, 222, 223

NOT APPLICABLEN

EXCELLENT CONDITION9

VERY GOOD CONDITION - no problems noted.8

GOOD CONDITION - some minor problems.7

SATISFACTORY CONDITION - structural elements show some minor deterioration.6

FAIR CONDITION - all primary structural elements are sound but may have minor section loss, cracking, spalling, or scour.

POOR CONDITION - advanced section loss, deterioration, spalling, or scour.4

SERIOUS CONDITION - loss of section, deterioration, spalling, or scour have seriously affected primary structural components. Local failures are possible. Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION - advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the structure until corrective action can be taken.

“IMMINENT” FAILURE CONDITION - major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability.

Structure is closed to

FAILED CONDITION - out of service; beyond corrective action.0

RAILROAD TIES

ABUTMENTS

1. BREASTWALLS OR COLUMNS N

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS G

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS 04 - FLOOR G

6. WINGWALLS N

7. WEEP HOLES N

8. EXPANSION JOINTS N

9. EROSION AND/OR SCOUR N

10.SETTLEMENT OR DEFLECTION G

11.SLOPE PROTECTION N

12.OTHER N

36. TRAFFIC AND SAFETY FEATURES

A. BRIDGE RAILINGS:

B. TRANSITIONS:

C. APPROACH GUARDRAILS:

D. APPROACH GUARDRAIL ENDS:

N

N

N

N

PIER(S)

13. WALLS AND/OR COLUMNS

14.PILE BENTS

15.CAPS AND/OR BEARING SEATS

16.FOUNDATIONS 04 - FLOOR

17.EROSION AND/OR SCOUR

18.SETTLEMENT OR DEFLECTION

19.OTHER

F

N

G

G

N

G

N

TRAFFIC SAFETY RATING CODES

0 - Does not meet standards or a safety features is required and none is provided.

1 - Meets currently acceptable standards.

N - Not applicable or a safety features is not required.

FIELD INSPECTION REPORT STRUCTURE NO. 4810-033P

ITEM REFERENCE AND REMARKS

58.10 RAILROAD TIES:

MINOR CHECKING AND SPLITTING OF RAIL TIES.

59.1 BEARING DEVICES:

BEARING DEVICES CONSISTS OF WHEELS THAT ROLL ON RAIL AT BOTH ENDS OF BRIDGE. MINOR SPOT RUSTING OF BEARINGS.

59.2 GIRDERS OR BEAMS:

MINOR ACCUMULATION OF LEAF DEBRIS ON BOTTOM FLANGE OF GIRDERS AT BEARING AREAS AT BOTH ENDS OF BRIDGE.

MOCK RIVET HEADS ON OUTSIDE FACE OF GIRDERS; SEVERAL HEADS ARE LOOSE OR HAVE FALLEN OFF.

60.3 CAPS AND/OR BEARING SEATS:

BEARING SEAT CONSISTS OF RAIL IN FOUNDATION AROUND TURNTABLE PIT.

60.5

60.13

FOUNDATIONS:

FOUNDATION CONSISTS OF TURNTABLE PIT CONCRETE FLOOR.

WALLS AND/OR COLUMNS:

PIER COLUMN CONSISTS OF CENTER PIVOT. MODERATE ACCUMULATION OF DEBRIS INSIDE CENTER PIVOT.

223.1 RETAINING WALL:

RETAINING WALL CONSISTS OF OUTSIDE WALL AROUND TURNTABLE PIT.

MINOR TO MODERATE CRACKING THROUGHOUT ENTIRE RETAINING WALL WITH MODERATE WATER STAINING AND MODERATE

EFFLORESCENCE.

STRUCTURE LOAD RATING STRUCTURE NO. 4810-033P

TRUCK TYPE

INVENTORY RATING (NORMAL TRAFFIC) OPERATING RATING (MAXIMUM LOAD)

TONS METRIC TONS TONS METRIC TONS

H 0 0

HS 0 0

TYPE 3 0 0

TYPE 3S2 0 0

TYPE 3-3 0 0

DESIGN LOADING: 8 - RAILROAD

X CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION:

LOAD RATING CONTROLLED BY:

REMARKS: SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS. TURNTABLE HAS BEEN DETERMINED TO BE SATISFACTORY FOR 286,000 LB.

LOADING CURRENTLY USING RAIL LINE.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 4810-033P

STRUCTURE IDENTIFICATION

(201) PARK: STEAMTOWN NATIONAL HISTORIC SITE (1) STATE:............................................ 423 - PENNSYLVANIA

(202) STRUCTURE NAME:..............TURNTABLE BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND:............... 5 - RAILROAD BRIDGE (3) COUNTY CODE:....................... 42069 LACKAWANNA

(204) STRUCTURE NUMBER:.........4810-033 P (4) CITY / PLACE CODE:

3 - NORTHEAST (5) INVENTORY ROUTE:................(205) NPS REGION:........................ 1 8 0 00900 0

(206) ROUTE CODE NUMBER:....... (6) FEATURES INTERSECTED:.......... TURNTABLE PIT

(207) ROAD SECTION NO:............. (7) FACILITY CARRIED:...................... TURNTABLE BRIDGE

(208) NPS ROAD CLASS:............... 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO:.............. 4810033P0000000

(209) WITHIN NPS BNDRY?:.......... Yes (9) LOCATION:..................................... Center of Roundhouse

(210) OPERATING UNIT:.................PARK (10) INV. RTE. - MIN. VERT. CLR:..... 99.99 FT ( 99.99 M)

(211) PROJECT NO(S):................... (11) MILE POINT:................................. (KM PT: 0 )

(212) DRAWING NUMBERS:........... (27) YEAR BUILT:

(21) MAINTAINED BY:......................66 - NATIONAL PARK SERVICE (106) YEAR RECONSTRUCTED:

(22) OWNER:................................... 66 - NATIONAL PARK SERVICE (20) TOLL:............................................ 3 - ON FREE ROAD

(37) HISTORIC DESIGNATION:.......... 5 - NOT ELIGIBLE

STRUCTURE DESCRIPTION, FOUNDATION, AND DECK TYPE

(43A) MAIN STR. MATERIAL:..........3 - STEEL (44A) APPR. STR. MATERIAL:............ 0 - Other

(43B) MAIN STR. TYPE:.................. 03 - GIRDER AND FLOORBEAM (44B) APPR. STR. TYPE:.................... 00 - OTHER

SYSTEM

(45) NO. OF MAIN SPANS:..............002 (46) NO OF APPROACH SPANS:

(48) MAX. SPAN LENGTH:..............42 FT ( 12.8 M)

(49) STRUCTURE LENGTH:........... 90.5 FT ( 27.6 M) (108) WEAR SURFACE/PROTECT SYSTEM:

(216A) ABUTMENT #1 FDN:........... 2 - SPREAD FTG ON BEARING MAT'L A) TYPE WEARING SURFACE:.. 9 - OTHER

(216B) ABUTMENT #2 FDN:........... 2 - SPREAD FTG ON BEARING MAT'L B) TYPE MEMBRANE:................. 0 - NONE

(217A) PREDOM. PIER FDN:.......... 2 - SPREAD FTG ON BEARING MAT'L C) TYPE PROTECTION:.............. 0 - NONE

(217B) SECOND. PIER FDN:.......... 6 - N/A (218) IS SALT USED?.......................... NO

(107) DECK TYPE:.......................... 9 - OTHER

LOAD RATING AND POSTING

(31) DESIGN LOAD:.........................8 - RAILROAD (41) LOAD RESTRICTION:.................. A - OPEN

(66) INVENTORY RATING:.............. TONS ( 0 METRIC TONS) (70) BRIDGE POSTING:...................... 5 - EQUAL TO OR ABOVE LEGAL

LOADS

(64) OPERATING RATING:.............. TONS ( 0 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 11/18/2025 (91) FREQ. OF INSP: 24 MONTHS (92 / 93) CRITICAL FEATURE INSPECTION (CFI):

(219) ADD. STUDIES NEEDED: N - 0 - NONE (A) FRACTURE CRITICAL:.......... Y

(220) SPECIAL STUDY TYPE: INSP. EVERY 24 MONTHS - LAST INSP: 11/15/2023

(221) SPECIAL STUDY DATE: (B) UNDERWATER:..................... N

INSP. EVERY MONTHS - LAST INSP:

(C) SPECIAL INSPECTION:........ N

INSP. EVERY MONTHS - LAST INSP:

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 4810-033P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE:................................ 41° 24' 26.2" N (51) CURB TO CURB WIDTH:............ 10.0 FT ( 3 M)

(17) LONGITUDE:............................ 75 40° ' 16.4" W (52) DECK WIDTH:.......................... 10.0 FT ( 3 M)

(19) DETOUR LENGTH:.................. 199 MI ( 199 KM) (32) APPR. ROADWAY WIDTH:...... 5.0 FT ( 1.5 M)

(28A) LANES ON STRUCT:.............01 (213) APPR. PAVEMENT WIDTH:... 5.0 FT ( 1.5 M)

(28B) LANES UNDER STRUCT:......00 LEFT SHOULDER:............... 0.0 FT ( 0 M)

(42A) SERVICE ON:.........................2 - RAILROAD RIGHT SHOULDER:.......... 0.0 FT ( 0 M)

(42B) SERVICE UNDER:................. 0 - OTHER (33) BRIDGE MEDIAN:.................... 0 - NO MEDIAN

(29) AVG DAILY TRAFFIC:..............1 (34) SKEW ANGLE:......................... 0 °

(30) YEAR OF ADT:......................... 2019 (35) STRUCTURE FLARED:............ 0 - NO FLARE

(114) FUTURE ADT:.........................2 (47) TOTAL HORIZ. CLEARANCE:.. 20 FT ( 6.1 M)

(115) YEAR OF FUTURE ADT:........2039 (50) CURB OR SIDEWALK WIDTHS:

(101) PARALLEL STRUCTURE:......N - NO PARALLEL STRUCTURE LEFT:.................................... 3.0 FT ( 0.9 M)

(38) NAVIGATION CONTROL:.........N RIGHT:.................................. 3.0 FT ( 0.9 M)

(39) VERTICAL CLEARANCE:.........0 FT ( 0 M) (214) BRIDGE RAIL TYPE

(40) HORIZ. CLEARANCE:..............0 FT ( 0 M) RAIL CONFIGURATION:...... 5 - OTHER

(111) ABUT OR PIER PROT:...........1 - NAVIGATION PROTECTION NOT MATERIAL:........................... 4 - STEEL

REQUIRED

LATERAL UNDERCLEARANCE: DESIGN TYPE:..................... 1 - CONTINUOUS RAIL

(55) RIGHT:...............................00 FT ( 0 M) (215) BRIDGE RAIL HEIGHT:.......... 3.70 FT ( 1.13 M)

(56) LEFT:.................................0 FT ( 0 M) (53) MIN. VRT. CLR. OVER DECK: .00 FT ( 0 M)

(54) MIN. VRT. UNDRCLRANCE:... .00 FT ( 0 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

(58) DECK:....................................... 7 (67) STRUCTURAL EVALUATION:

(59) SUPERSTRUCTURE:...............7 (68) DECK GEOMETRY:...................... N

(60) SUBSTRUCTURE:.......... 7 (69) UNDERCLEARANCES:................ N

(61) CHANNEL:................................N (71) WATERWAY ADEQUACY:........... N

(62) CULVERT:.................................N (72) APPROACH ALIGNMENT:

(222) APPROACHES:...................... 8 (113) SCOUR CRITICAL:.................... N - NOT OVER WATERWAY

(223) RETAINING WALL:.................6 (225) PURPOSE OF IMPROVEMENT: 1 - MAINTENANCE

(36) TRAFFIC SAFETY FEAT: N N N N (226) PRIORITY OF IMPROVEMENT: D - MINOR

(75A) TYPE OF WORK:................... (227) MAINTENANCE COST:

(75B) WORK DONE BY:.................. (228) REHAB / RECNSTR COST:

(76) IMPROVEMENT LENGTH:....... FT ( 0 M) (229) CONSTRUCTION COST:

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIGURATION INFORMATION:

Inspector: Parviz Sharifi Structure Number: 4810033P0000000

Inspection Date: 11/18/2025 Facility Carried: TURNTABLE BRIDGE

Other Inspection Report

Pictures

PHOTO 3

Description LOOKING TOWARD A END

PHOTO 4

Description LEFT SIDE

Other Inspection Report

Pictures

PHOTO 5

Description GENERAL TOPSIDE VIEW, LOOKING TOWARD B

PHOTO 6

Description TYPICAL CHECKING OF TIMBER RAIL TIES, A END SHOWN

Other Inspection Report

Pictures

PHOTO 7

Description GENERAL UNDERSIDE VIEW, LOOKING TOWARD A END

PHOTO 8

Description GENERAL VIEW OF A END WHEEL BEARINGS ON INTERIOR SIDE OF GIRDERS

Other Inspection Report

Pictures

PHOTO 9

Description TYPICAL PAINT PEELING AT BOLT AND NUT CONNECTION OF BEARING WHEELS SHAFT

SUPPORT, A END SHOWN

PHOTO 10

Description GENERAL VIEW OF CENTER PIVOT AT A SIDE; NOTE ACCUMULATED DEBRIS AROUND

CENTER PIVOT

Other Inspection Report

Pictures

PHOTO 11

Description ACCUMULATED DEBRIS INSIDE CENTER PIVOT

PHOTO 12

Description GENERAL UNDERSIDE VIEW, LOOKING TOWARD B END

Other Inspection Report

Pictures

PHOTO 13

Description GENERAL VIEW OF B END WHEEL BEARINGS ON INTERIOR SIDE OF GIRDERS; NOTE

ACCUMULATED DEBRIS AROUND WHEEL BEARING

PHOTO 14

Description PAINT PEELING AT SECOND FLOOR BEAM BOTTOM FLANGE FROM B END LOOKING

TOWARD A END

Other Inspection Report

Pictures

PHOTO 15

Description TYPICAL VIEW OF BOLT CONNECTED INTERIOR FLOOR BEAM TO GIRDER, LEFT GIRDER

AT B END SHOWN

PHOTO 16

Description TYPICAL WATER DRIPPING, LEAKAGE STAINING AND PAINT PEELING AT GIRDER

INTERIOR FLANGE, RIGHT GIRDER AT CENTER SHOWN

Other Inspection Report

Pictures

PHOTO 17

Description GENERAL VIEW OF TURNTABLE ROTATING ENGINE AND WHEEL BEARING AT B END

PHOTO 18

Description TYPICAL CRACKING WITH EFFLORESCENCE AND WATER STAINING OF OUTSIDE

RETAINING WALL AROUND TURNTABLE PIT, LEFT SIDE SHOWN