US Bridges

US 87 NB over Comanche Creek

Fair

Mason County, Texas · 3.00 MI SE of SH 29 · Structure no. 141570007104015

Built
1934
91 years old, rebuilt 1968
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
292 ft
8 main spans
Daily traffic
1,569
2020 count
Owner
State
State Highway Agency

About this bridge

US 87 NB over Comanche Creek is a concrete tee beam carrying US 87 NB over Comanche Creek in Mason County, Texas. It was built in 1934 and reconstructed in 1968, so it is 91 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 1,569 vehicles a day, roughly 18% of them trucks, projected to reach 3,510 by 2033. The structure is 292 ft (89 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 87 NB
CrossesComanche Creek
Location3.00 MI SE of SH 29
RouteU.S. Route 87
CountyMason County
StateTexas
Coordinates30.71858, -99.19754
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length292 ft (89 m)
Longest span37 ft (11.3 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,569 (2020)
Projected traffic3,510 by 2033
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 87 NB over Comanche Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1968.

What condition is US 87 NB over Comanche 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 June 2023.

How much traffic does US 87 NB over Comanche Creek carry?

About 1,569 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is US 87 NB over Comanche Creek?

The structure is 292 ft (89 m) long with a longest span of 37 ft (11.3 m) and a deck 29 ft wide.

Who owns US 87 NB over Comanche Creek?

It is owned by the State Highway Agency.