Agness Road Pavement Eval.pdf

PHYSICAL DATA

for

FEDERAL HIGHWAY ADMINISTRATION

WESTERN FEDERAL LANDS HIGHWAY DIVISION

PROJECT

OR FS RRSIS610 33(1),

Agness Road Pavement Preservation

Agness Road Pavement Evaluation

CONTENTS

1 Description of Review

2 Pavement Evaluation

Section 1 (MP 9.6 to MP 31.3)

Section 2 (MP 42.2 to MP 59.6)

LIST OF FIGURES

Figure 1. Severe pavement distresses at vicinity of a) MP 10.3 and b) MP 14.4

Figure 2. Undulation and cracks caused by settlements at culvert replacement sites a) vicinity of MP 15.0 (continuous for about 100 feet) and b) vicinity of MP 15.1

Figure 3. Undulation and high severity longitudinal cracks a) vicinity of MP 17.2, b) vicinity of MP 17.6, and c) MP 17.9 (continuous for about 200 feet)

Figure 4. High severity longitudinal cracks at vicinity of a) MP 18.5, b) MP 19.0, c) MP

20.1 , and d) MP 20.8

Figure 5. high severity longitudinal cracks and raveling at vicinity of MP 21.6

Figure 6. High severity fatigue cracks at vicinity of MP 22.3 (continuous for about ¼ mile)

Figure 7. High severity fatigue and longitudinal cracks at vicinity of MP 22.7 (continuous for about 200 feet)

Figure 8. High severity longitudinal cracks at vicinity of MP 27.5 (continuous for about 200 feet)

Figure 9. High severity longitudinal cracks and potholes at vicinity of MP 28.9 (continuous for about 150 feet)

Project: OR FS RRSIS610 33(1) Agness Road Pavement Preservation

Figure 10. High severity longitudinal cracks at vicinity of MP 30.0 (continuous for about 500 feet)

Figure 11. Cracks and delaminations on both ends of the bridge, MP 13.4

Figure 12. High severity rutting and longitudinal cracks at vicinity of MP 16.8 (continuous for about 500 feet)

Figure 13. High severity shoving at vicinity of a) MP 23.8 and b) MP 24.3

Figure 14. Loss of edge support before bridge approach at vicinity of MP 26.8

Figure 15. Loss of edge support and delaminations at the vicinity of MP 28.1

Figure 16. Delaminations at vicinity of a) MP 28.4 and b) MP 30.4

Figure 17. High severity longitudinal cracks attributed to unstable slope at vicinity of MP

42.6 (continues for about 1,000 feet)

Figure 18. Settlements attributed to unstable slope at vicinity of MP 44.2 continues for about 500 feet

Figure 19. High severity longitudinal cracks attributed to differential settlement and loss of edge support on Section 2 of Agness Road

Figure 20. Pavement distresses caused by differential settlement

Figure 21. Example of frequent high severity fatigue cracks turning into potholes on Section 2 of Agness Road

Figure 21. Example of frequent loss of edge of the pavement on Section 2 of Agness Road

1 Description of Review

On August 9th - 11th, 2022 a pavement evaluation was conducted on Agness Road by Nassim Sabahfar and Corbin Williams, Western Federal Lands Highway Division Materials Engineer and Assistant Materials Engineer. Agness road follows the Rogue River northeast of Gold Beach and provides the primary access to the Rogue River-Siskiyou National Forest. Two sections of the road identified for pavement preservation under current project are MP 9.6 to MP 31.3 (Section 1) and MP 42.2 to MP 59.6 (Section 2). Primary users of the roadway include school buses, residents, recreational travelers, and delivery trucks. US Forest Service intention is to preserve and maintain currently paved mentioned sections. The section between MP 31.3 and 42.2 is aggregate surfaced and is not considered for preservation in the current project.

The pavement evaluation at Agness Road entailed visual evaluation of the pavement condition with some measurements taken to verify the severity level of the pavement distress. The evaluation was accomplished by traversing the entire length. Areas with more extensive pavement distress were traversed on foot to obtain a more definitive and descriptive assessment of the damage.

Segments in relatively good condition were reviewed from a slow moving vehicle with on-the-ground assessments performed at localized areas of distress.

Pavement evaluations are presented for Section 1 (MP 9.6 to MP 31.3) and Section 2 (MP 42.2 to

MP 59.6).

2 Pavement Evaluations

Section 1 (MP 9.6 to MP 31.3)

The condition of existing pavement varies over the 21.7 mile length of the Section 1. The existing chip seal is at the end of its life cycle and while the structure of the road is mostly in good condition, some segments are severely distressed and in poor condition. The majority of severe distresses on Agness Road are caused by differential settlement and are rooted in deeper pavement layers and subgrade. Differential settlements appear to have been caused by loss of edge support due to embankment and slope movements. Besides the distresses caused by differential settlement, rutting, delaminations, and longitudinal and block cracking were visible on the pavement as well.

Figure 1 through Figure 10 show severe distresses on Section 1 of Agness Road that are caused by differential settlement and loss of edge support. Figure 11 through Figure 16 show other severe pavement distresses such as rutting and delamination.

Figure 1. Severe pavement distresses at vicinity of a) MP 10.3 and b) MP 14.4

Figure 2. Undulation and cracks caused by settlements at culvert replacement sites a) vicinity of MP 15.0 (continuous for about 100 feet) and b) vicinity of MP 15.1

Figure 3. Undulation and high severity longitudinal cracks a) vicinity of MP 17.2, b) vicinity of MP 17.6, and c) MP 17.9 (continuous for about 200 feet)

Figure 4. High severity longitudinal cracks at vicinity of a) MP 18.5, b) MP 19.0, c) MP 20.1, and d) MP 20.8

Figure 5. high severity longitudinal cracks and raveling at vicinity of MP 21.6

Figure 6. High severity fatigue cracks at vicinity of MP 22.3 (continuous for about ¼ mile)

Figure 7. High severity fatigue and longitudinal cracks at vicinity of MP 22.7 (continuous for about 200 feet)

Figure 8. High severity longitudinal cracks at vicinity of MP 27.5 (continuous for about 200 feet)

Figure 9. High severity longitudinal cracks and potholes at vicinity of MP 28.9 (continuous for about 150 feet)

Figure 10. High severity longitudinal cracks at vicinity of MP 30.0 (continuous for about 500 feet)

Figure 11. Cracks and delaminations on both ends of the bridge, MP 13.4

Figure 12. High severity rutting and longitudinal cracks at vicinity of MP 16.8

(continuous for about 500 feet)

Figure 13. High severity shoving at vicinity of a) MP 23.8 and b) MP 24.3

Figure 14. Loss of edge support before bridge approach at vicinity of MP 26.8

Figure 15. Loss of edge support and delaminations at the vicinity of MP 28.1

Figure 16. Delaminations at vicinity of a) MP 28.4 and b) MP 30.4

Section 2 (MP 42.2 to MP 59.6)

Section 2 of Agness Road (MP 42.2 to MP 59.6) is severely distressed with high severity fatigue cracks, longitudinal cracks, delaminations, and loss of edge support. The pavement is in poor condition almost in its entirety. More than 50 locations were marked as severely distressed during the field investigations with some distresses extending more than 1,000 feet. Majority of severe fatigue and longitudinal caracks appear to have caused by loss of edge support due to embankment and slope movements and delaminations are caused by erosion and rock falls.

In general, pavement distresses on Section 2 of Agness road (MP 42.2 to MP 59.6) are beyond repair by preservative measures such as crack seal/fill and chip seal. Figure 17 through 21 show examples of frequent severe pavement distresses on Section 2 of Agness Road.

Figure 17. High severity longitudinal cracks attributed to unstable slope at vicinity of MP 42.6 (continues for about 1,000 feet)

Figure 18. Settlements attributed to unstable slope at vicinity of MP 44.2 continues for about 500 feet

Figure 19. High severity longitudinal cracks attributed to differential settlement and loss of edge support on Section 2 of Agness Road

Figure 20. Pavement distresses caused by differential settlement

Figure 21. Example of frequent high severity fatigue cracks turning into potholes on Section 2 of Agness Road

Figure 22. Example of frequent loss of edge of the pavement on Section 2 of Agness Road