US Bridges

US 77 over Cottonwood Creek

Fair

McLennan County, Texas · 0.2 MI N of Lp 340 · Structure no. 091610020901003

Built
1931
94 years old, rebuilt 1984
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete
Length
79 ft
3 main spans
Daily traffic
14,013
2020 count
Owner
State
State Highway Agency

About this bridge

US 77 over Cottonwood Creek is a concrete tee beam carrying US 77 over Cottonwood Creek in McLennan County, Texas. It was built in 1931 and reconstructed in 1984, so it is 94 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 14,013 vehicles a day, roughly 10% of them trucks, projected to reach 21,010 by 2037. The structure is 79 ft (24.2 m) long and 91 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 77
CrossesCottonwood Creek
Location0.2 MI N of Lp 340
RouteU.S. Route 77
CountyMcLennan County
StateTexas
Coordinates31.50164, -97.12574
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length79 ft (24.2 m)
Longest span27 ft (8.1 m)
Deck width91 ft (27.7 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,013 (2020)
Projected traffic21,010 by 2037
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$500,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 77 over Cottonwood Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1984.

What condition is US 77 over Cottonwood Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does US 77 over Cottonwood Creek carry?

About 14,013 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 77 over Cottonwood Creek?

The structure is 79 ft (24.2 m) long with a longest span of 27 ft (8.1 m) and a deck 91 ft wide.

Who owns US 77 over Cottonwood Creek?

It is owned by the State Highway Agency.